Knowledge base for software setup, errors, and daily tool work.

Fix Windows Security Invalid Configuration Permission Denied

You open Windows Security and see 'Invalid configuration. Permission denied.' This usually means ...

Fix Microsoft Teams Mic Not Working with External Microphone

You plug in an external microphone, but Microsoft Teams still won't pick up your voice. This is a...

Windows Store Error 0x80073cf9: Step-by-Step Fix Checklist

If you see error 0x80073cf9 when installing or updating apps from the Microsoft Store, it usually...

Fix Windows Defender Proxy Error: Permission Denied